PHY 2053 Chapter Notes - Chapter 5: Corde Lisse, Friction, Parachuting

110 views2 pages

viridiancaribou590

3 Aug 2017

School

Department

Course

Professor

For unlimited access to Textbook Notes, a Class+ subscription is required.

Document Summary

Is air resistance more important to objects with high or low density? low density (higher mass larger the force of gravity, a large force of gravity makes air drag face negligible) To make tighter turn with a smaller radius, you need to __________ your speed. Reaching the radius tends to _________________ the acceleration. What is the formula for centripetal acceleration? a = v /r. If the radius is four times smaller than normal, when taking a turn the speed must be. What is the formula for weight? w = mg. As m shrinks to zero, a grows toward infinity. As m grows toward infinity, a shrinks to zero. What forces affect a mountain climber is hanging from a vertical rope, far above the ground and far from the rock face. What forces affect a baseball player is sliding into second base. normal, kinetic friction, and weight. What forces affect a jet plane is speeding down the runway during takeoff.

Related Questions

The maximum lift force on a bat is proportional to the square of its flying speed v. For the the hoary bat the magnitude of the lift force is given by

The bat can fly in a horizontal circle by "banking" its wings at an angle theta. In this situation, the magnitude of the vertical component of the lift force must equal the bat's weight. The horizontal component of the force provides the centripetal acceleration.

(a) What is the minimum speed that the bat can have of its mass is .031 kg?

(b) If the maximum speed of the bat is 10 m/s, what is the maximum banking angle that allows the bat to stay in a horizontal plane?

(d) Can the bat turn with a smaller radius by flying more slowly?

lemonrabbit269

The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by

The bat can fly in a horizontal circle by "banking" its wings at an angle , as shown in Figure P7.72. In this situation, the magnitude of the vertical component of the lift force must equal the bat's weight. The horizontal component of the force provides the centripetal acceleration.